Improvement in shuttles



gnitrh gisten strnt @Hirn GEORGE CROMPTON, OF WORCESTER, MASSAGHUSETTS.Letters Patent No.v 72,457, dated December 24, 1867.

IMPsovsMENT In ssUTTLBs.

die stormt maar ts iu that Enters man mit matita nett nf its time.'

TO ALL WHOM IT MAY CONCERN:

Be it known that I, GEORGE CRQMPTON, of Worcester, in the county ofWorcester, and State of Massa.- chusetts, have invented certain new-anduseful Improvementsin Loom-Shuttles; and I do hereby declare that thefollowing, taken in connection with the drawings which accompany andform part of this specification, is a description of' my invention,suiiicient to enable those skilled i n the'art to practise it.

The invention relates to mechanism for keeping the bobbin from slidingendwise when the spindle is thrown ldown into the shuttle,vandtomecha-ni'sm for holding the spindle in position both within theshuttle and when Y thrown UP therefrom. l i

The drawings are illustrations of a. shuttle embodying 'my improvements.v

A shows a longitudinal central section of the shuttle; B, a plan of oneend of the same; '0, a cross-section on thelinexzv. i I

a denotes the common form of shuttle-shell, having the cavity t forreceivingthe bobbin c,`which is supported and turns freelylon thespindle d, the head ofgsaid spindle being mounted on a hinge-pin, e, sothat it may be thrown from its central or axial position within theshuttle up to an angle therefrom, (as seen bythe red linesat A,) toenable the empty bobbin to be removed and replacedby a full one. v

The part of my invention-which relates to retaining the spindle din'eachof these positions at proper times,.consists in fixing in the uppersnrface of the shuttle-a stiti` plate-spring,-fastened at or near oneend to the shuttle-block, and projectingat itsopposite end towards theshuttle'jcavity, its free or springr end having a recess or concave-bedin itsunder surface, between which and a concave recess or bed in thehead of the spindle, a movable block or strut is interposed. This strutbeing in such position, (relativelyto its respective bearings in thespindle-head, and in the spring, and to the pin on which the spindleturns that when the spindle is within the shuttle, the strut acts topress the spindledown into and retain itin axial line within theshuttle, while thisA position of the strut is so changed, as thebohbinspindle is swung upthat the spring. then acting against the strut,and through the strut upon the spindlehead, tends to press the spindleup, and serves to' retain it in elevated position. l

The spring is shown atf, secured to the shuttle by 'a screw, g, itsfront end projecting over the hinged end of the spindle, and beingcurved so as to form a concavity or recess, L, in its under surface, asseen at A.

In the top of the spindle-head, and somewhat in front of the hinge-pine, is a recess or depression, z', and between these recesses h z', astrut, 7c, is placed, the strut in its normal position being inclinedrelatively to the spring and spindle, las seen at A. The stress of thespring exerted on the spindle-head, through this strut, thereby pressingthe .spring down to and. holding it in its horizontal position, as shownin such view, as will be readily understood. p

.The upper end of the strut is immovable, (excepting.vertically,) butwhen `thev spindle is swung up from the shuttle, the lower end of thestrut is thereby thrown back, until, having been brought into andcarried just beyond a vertical position, the change ofl the inclinationof the strut causes it to'bear upon the rear side of its bed t', asvseen inred at A, and thereby tends to press the spindle up, and toretainit in stationary elevated' position, as there shown, (the extentoi` itsupward movement being regulated by any proper means.)

That part oi' the invention which'relates to coniining and releasing thebobbin at proper times, consists Vin the employment of a spring-latchplate, (a latch-tooth or detent upon which springs into a groove in thebobbin= head g) said plate being hinged to the spindle-head, and havinga spiral spring, which presses the latch-tooth up into the groove in thebobbin-head, a stationary pin being so located in the shuttle, that asthe spindle is thrown up, the front partof the latch-plate comes incontact with the pin, and is arrested thereby, the bobbinl groove thenswinging clear of the latch, and allowing the bobbin to bev freelywithdrawn.

The spring-latch plate shown at Zhas an ear or projection, m, throughwhich and vthe spindle-head, a. hinge pin, n, extends, the plateswinging slightly on this pin, to carry the tooth o on the front endot'` the latch-plate into and out from the groove p, in the periphery ofthe bobbin-head. Between arear projection, q, from this plate, and aprojection, r, from the Spindle-head, a spiral spring, s, is placed;this spring tending to keep the tooth o pressed towards the spindle, aswill readily be seen, the extent of inward movement of the tooth being-iixed so as to present the'inclined front surface ofthe tooth in suchposition that the bobbinhead, as it is slid and relatively to thebobbin-spindle, substantially as set forth.

down the spindle into contact with it, will depress the tooth, whichsprings into the groove and confines the bobbin in place upon thespindle. When the spindle is thrown up from the shuttle, however, theinner surface of the plate l,just in rear of the tooth, comes inveontuet with a pin, #which stops the plate, but allows the spindle tocontinue its upward movement, the tooth being thereby thrown from thebobbin-groove, (as seen in red at A,) enabling the empt)r bobbin to beslid from the spindle;

I claim, in combination with the bobbin-spindle, the spring f und strutlc, arranged to operate substantiallyl as set forth.

I also claim the hinge-lateh plate l, the spring s, and the stoppin t,when combined and arranged together,

GEO. CROMPTON.

Witnesses:

J. B. CROSBY,

FRANCIS Gouw.

